What is sucralfate?Can you take omeprazole and sucralfate at the same time?If you are taking sucralfate to treat ulcers, the tablets or liquid usually are taken four times a day. If you are taking sucralfate to prevent an ulcer from returning after it has healed), the tablets usually are taken twice a day. Take sucralfate on an empty stomach, 2 hours after or 1 hour before meals.